The mobile facilities, which have the capacity to test 300 people each day across the UK, began to be rolled out by service members last week.
The MTUs, developed by the military, operate out of drive through sites to help access those who are isolated communities such as care homes.
Troops from The Grenadier Guards hold up cards to explain how to complete coronavirus testing in Dulwich (Picture: MOD).Soldier from The Grenadier Guards at Dulwich coronavirus mobile testing unit (Picture: MOD).Soldier from The Grenadier Guards at Dulwich coronavirus mobile testing unit (Picture: MOD).Members of The Royal Anglian Regiment at a mobile coronavirus testing facility in Hemel Hempstead (Picture: MOD).Members of The Royal Anglian Regiment at a mobile coronavirus testing facility in Hemel Hempstead (Picture: MOD).Members of The Royal Anglian Regiment at a mobile coronavirus testing facility in Hemel Hempstead (Picture: MOD).Member of 2nd Battalion Royal Anglican operating a coronavirus mobile testing site in Watford (Picture: MOD).Patient drops off completed self test coronavirus kit into the collection box at a mobile testing unit in Scarborough (Picture: MOD).Royal Marines from 42 Commando conduct coronavirus testing at Torquay Coach Station (Picture: MOD).Soldier from 1st Battalion Duke of Lancaster Regiment holds a contact number to a driver at coronavirus mobile testing unit in Kendal (Picture: MOD).Grenadier Guards at a vehicle based at coronavirus mobile testing site in Dulwich (Picture: MOD).102 Logistic Brigade and 16 Signal Regiment troops train in coronavirus mobile testing at Army Barracks in Lincolnshire (Picture: MOD).Soldier gestures for the driver to stop at the collection station during a drive through mobile testing unit at Kendal Leisure Centre (Picture: MOD).A coronavirus test kit is posted through the car window at the Mobile Testing Unit in Kendal (Picture: MOD).Soldiers at a mobile testing unit in Hemel Hempstead (Picture: MOD).